NEW
Font size
WorksheetsStructure and Properties of Matter - 7th Grade
Total questions: 14
Worksheet time: 31mins
Everything is made of tiny pieces called
Cells
Molecules
Water
Atoms (elements)
What combine to form molecules?
Water
Elements (atoms)
Cells
Solids
How many oxygen atoms are in 1 water molecule?
1
2
3
4
How many oxygen atoms are in 1 carbon dioxide (CO2) molecule?
1
2
3
4
How many hydrogen atoms are needed to form 1 hydrogen molecule?
1
2
3
4
A single carbon atom can bond with up to how many other molecules?
1
2
3
4
They type of bonds that link atoms together.
Electric bonds
James bonds
Chemical bonds
Neutron bonds
When water freezes into ice, the water molecules form a bond between the ___________ & ___________ atoms, one from each molecule.
oxygen & oxygen
hydrogen & hydrogen
oxygen & hydrogen
The atoms in a ________ are packed tightly together and slowly vibrate.
liquid
solid
gas
plasma
How many oxygen atoms are needed to form one oxygen molecule? (O2)
1
2
3
4
The molecules that make up a liquid are ____________.
fixed in a rigid shape
very spread out
able to flow around each other
packed tightly together
When a salt molecule is formed (NaCl), how many chemical bonds are needed to form the molecule?
1
2
3
4
When water freezes into ice, how many chemical bonds do each oxygen atom form?
1, one strong
2, one strong and one weak
3, two strong and one weak
4, two strong and two weak
How many chemical bonds are needed to form a glucose molecule?
20
24
19
6
